Lip turning machine



July 5, 1938. c, NEwHALL 2,122,486

LIP TURNING MACHINE Filed May 15, 1936 Patented July 5, 1938 PATENT OFFICE LIP TURNING MACHINE Carl A. Newhall, Peabody, Mass,

assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application May 15, 1936, Serial No. 79,955

6 Claims.

This invention relates to lip turning machines and is herein illustrated and described as embodied in a machine for raising and turning back from the base of the channel the lip of an outsole which may be temporarily attached to a shoe.

It is an object of the invention to provide an improved machine of the type under consideration. In accordance with a feature of the invention there is provided means for raising a channel lip formed on a sole, a tool adapted to extend beneath the raised lip and having a movement of rotary oscillation to turn the raised lip away from the base of the channel, and means for setting the lip in open position. In the illustrated machine the lip-engaging tool exerts a prying action upon the raised lip to open the channel; and the lip-raising means comprises a plow which is oscillated to exert a feeding action upon the sole as the work is presented by the operator. The plow advances at a time when the lip-turning tool is not exerting downward pressure upon the lip and executes its back feed movement at a time when the lip-raising tool presses the lip and thereby the sole downwardly and relieves the frictional engagement between the base of the channel and the plow. The lipsetting member of the illustrated machine operates by pressure upon the turned-back lip to set the lip. This presser member and the plow are both secured to the same support, the presser member moving in unison with the plow. The oscillatory movement above referred to renders the presser member more efiective in its setting action upon the lip.

' The invention further consists in features of construction and combinations and arrange-. ments of parts hereinafter described and claimed. The invention will be explained with reference to the accompanying drawing, in which Fig. 1 is'a view in perspective of the upper portion of the improved machine;

Fig. 2 is a plan View of the shoe-engaging instrumentalities of the machine in operation upon a channel formed on the outsole of a shoe;

Fig. 3 is a view in elevation of the shoe-engaging members shown in Fig. 2;

Fig. 4 is a view taken in the direction of the arrow A of Fig. 3;

Fig. 5 is a sectional view taken on the line V-V of Fig. 4; and

Fig. 6 is a sectional view similar to Fig. 5 but with one of the operating instrumentalities shown in a different position.

The supporting structure of the machine consists of a frame it adapted to stand upon the floor and supporting a head l2. A shaft [4 which is journaled in a bearing formed in the head 12 carries a pulley i6 which may be driven by a belt from any convenient source of power. Mounted upon the shaft [4 is a head [8 from which extends a crank pin 20. Mounted upon the crank pin 26 is one end of a connecting rod 22, the opposite end of which connecting rod is mounted upon a pin 24 extending from a crank 26. Extending from the head I2 is a bearing 28 in which is journaled a shaft 30. The crank 26 is secured upon the shaft 30 in any desired position of angular adjustment about the axis of the shaft by means of a clamping bolt 32 which extends through a lug 34 and is threaded into another lug 3d. The crank 26 is split and the bolt l d serves to draw the two portions of the crank 25 together to clamp the crank on the shaft 30. The radial displacement of the crank pin 24 from the axis of the shaft 38 is considerably greater than that of the crank pin 29 from the axis of the shaft M. In the illustrated machine one complete revolution of the shaft I4 will cause the shaft 39 to oscillate through an angle of about 80. The head 52 is shaped to enclose the head I8, connecting rod 22, and crank 26, and is provided with a cover plate 38 which may be removed to provide access to these parts.

Secured upon the outer end portion of the bearing 28 is a bracket All Extending downwardly from the bracket it is a pin 42 upon which is ro-tatably mounted a sleeve id. A lug 46 extending from the sleeve 54 has secured to it an integral member consisting of two parts, namely a plow it for raising a channel lip and a flat member 56 having a smooth under surface adapted to press down the overturned channel lip. Extending from the sleeve M is an arm 52 which is connected through a ball and socket joint 54 to one end of a connecting rod 56. The opposite end of the connecting rod 56 is mounted upon an eccentric pin 58 extending from the end of the shaft 30.

Non-rotatably clamped upon the end portion of the shaft 36 by a screw fill is a split sleeve An iron 6t extends in a general direction parallel to the axis of the shaft 30 beyond the end of the shaft and of the eccentric pin 58. The outer end of the iron 64 is shaped to enable it to raise the lip of the sole. This end portion of the iron 54 extends downwardly, terminating in a blunt point 55 which is adapted to bear against the shoulder of the channel. Extending upwardly from the point 66 is a blunt edge 68 which, as best shown in Fig. 6, is concave in the vicinity of the point 66. The concavity of the edge 58 straightens out and becomes somewhat convex at the upper portion of the edge 68.

Between the plow 48 and the pressing member 53 is a recess it into which the edge 68 i the point 65 extend. The plow 43 has an outer end portion 72 (Fig. 1) which is adapted to serve as a gage against which the shoulder of the channel is held. Beneath the pressing member 59 is a downwardly extending surface 14 which likewise constitutes a gage engageable with the shoulder of the channel. The bearing surfaces 12 and M and also the point 66 are substantially the line of the axis of the shaft The operation of the machine upon a shoe having a channel lip L is illustrated in Figs. 2 to 6, inclusive. Before presenting the shoe to the machine an end portion of the lip is first turned up by hand. The shoe is then held with the shoulder of the channel against the surfaces 72 and 14 with the pressing member 50 extending over the turned lipL. The iron 64 will partake of the oscillatory movement of the shaft 30 and the edge 68 will accordingly oscillate about the point 66 which engages the shoulder of the channel. As the iron 64 is thus oscillated the blunt edge 68 of the lip-raising member will oscillate about the point 65 which, as above indicated, lies substantially in the axis of oscillation, and pry up the lip L to open the channel. The turning or prying action of the edge 58 upon the lip Lv is illustrated in Figs. and 6, which show the edge 8 in its limiting positions. The concavity of the edge 5?; above referred to is provided to avoid sharply creasing the lip at the shoulder. The oscillation. of the shaft 36 will also, through the connecting rod 56, cause an oscillation of the sleeve 54 and thereby of the pressing member 50 and the plow 48. The angular position of the sleeve 62 upon the shaft is so adjusted in relation to the angular position of the eccentric pin 5-3 that when the edge 68 is moving from the position shown in Fig. 5 to the position shown in Fig. 6 and is pressing outwardly and downwardly upon the lip L the plow do and the pressing member 5%] will be moving in a direction opposite to the feed of the work, and when the edge 68 is not bearing outwardly or downwardly upon the lip L the plow 58 and the pressing member will be moving in the direction of feed of the work. As the operator holds the Work with upward and inward (i. e. toward the left as viewed in Figs. 5 and 6) pressure against the plow 48 and the pressing member 5a these members in their feeding movements tend to carry the sole along with them, while during the back feed movement of the plow and pressing member the downward and outward thrust of the edge 68 minimizes the frictional engagement between the shoe and the plow 48 and pressing member 50 and thereby overcomes any tendency on the part of those members to retract the shoe the course of the back feed movement. The oscillatory feed movement of the member 5t causes this member to exert an ironing or smoothing action upon the lip L to set the lip in its turned position. The limiting positions of the movement of the edge 68 may be varied by loosening the screw Gill and readjusting the sleeve 62 about the axis of the shaft 38. The timing of the feeding movement of the plow 58 and the pressing member 5% is adjusted by loosening the screw 34 and turning the shaft 30 relatively to the crank 26. In order to avoid changing the throw of the edge 63 the screw 68 may also be loosened and the sleeve 62 held stationary during this adjustment.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine of the class described comprising a plow for raising a channel lip formed on a sole, a tool adapted to extend beneath the raised lip,

means for imparting to said tool an oscillation about a center which is adjacent to the shoulder of the channel and having a heightwise comporifent relatively to the sole to cause said too; to turn'the raise-d lip away from the base of the channel, and means for setting the lip in open position.

2. A machine of the class described comprising means adapted to extend into a channel formed upon a sole for raising the lip of the channel, a tool adapted to engage the raised lip, means for imparting to said tool oscillatory movement having a downward component to turn the raised lip back away from the base of the channel, and means for imparting to said lipraising means an oscillatory movement in the direction of feed to facilitate feeding the sole.

3. A machine of the class described comprising means adapted to extend into a channel formed upon a sole for raising the lip of the channel, a tool adapted to engage the raised lip, means for imparting to said tool oscillatory movement having a downward component to turn the raised lip back away from the base of the channel, and

means for imparting to said lip-raising means an oscillatory movement in the direction of feed,

the two movement-imparting means being constructed and arranged to cause the advance feed movement of the lip-raising means to take place while the lip-engaging tool is not exerting a downward pressure upon the channel lip and to cause the lip-raising means to execute its back feed movement at a time when the lip is subjected to downward pressure from the lip-engaging tool.

i. A machine of the class described comprising a tool adapted to engage a channel lip, a plow positioned in advance of said tool for raising the lip, means for operating said lip-engaging tool to turn the raised lip away from the face of the channel, a presser member positioned upon the opposite side of said lip-engaging tool from said plow adapted to press downwardly upon the turned-back lip to set the lip, a common support for said plow and said presser member, and means. for oscillating said support to cause said plow and said presser member to oscillate lengthwise of the channei.

5. A machine of the class described comprising a plow adapted to extend into a channel formed on a sole for raising the lip of the channel, a gage engageab-le with the shoulder of the raised lip after the lip has been turned over, a member extending inwardly of the sole beyond said gage and having a smooth under surface for holding down the turned-over lip, means located between said plow and said hold-down member for turnthe lip been raised and turned over, a tool adapted to extend beneath the raised lip at a iocality between said gages, and means for osciliating said tool about an axis which lies substantially in a. line joining the two gages to cause the tool to exert a prying action to turn over the raised lip.

CARL A. NEWHALL. 

